Timer Functions

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Function

Display

The set delay period begins as soon as the supply is connected. At the end of this period the output relay will energise. The relay will remain in this state until the supply is removed.

Function

This timer is fitted with two SPDT relays. One relay is timed and will energise after the set delay time has elapsed. The second relay will energise immediately the supply is applied. Once energised both relays are held until the supply is removed.

The set ON delay period begins as soon as the supply is connected. At the end of this period the output relay is energised. The relay will remain in this state. When the supply is removed the output relay is held energised for the set OFF period. Both ON and OFF times are independently variable.
Note: This Timer DOES NOT USE INTERNAL BATTERIES.

When the supply is connected the output relay is energised. The set delay period commences as soon as the supply is removed. At the end of this period the output is released. This timer does not use internal batteries.
Note: The supply must be maintained for a minimum of 500ms for correct operation. (1 sec for 10 minute units. 5 seconds for 30 minute units).

When the supply is connected the output relay is energised for the set time period. At the end of this period the relay is released and remains in this state. To restart the sequence the supply must be removed and then reapplied.

(Solid State)

On application of the supply the relay remains       de-energised for the set delay period. The relay then breaks with both contacts open for the dwell time. When the dwell time has expired the relay energises and closes the normally open contact. The timer resets when the supply is completely removed for a period greater than the reset time.

On application of the supply the relay remains       de-energised for the set delay period. The relay then opens for the dwell time. This cycle repeats until the supply is removed. The timer resets when the supply is removed for a period greater than the reset time.
Note: This type of Star Delta timer relies on additional auxiliary contacts, fitted on the controlled contactors.

Delay Off (with supply connected) A volt free contact (V.F.C.) is wired across pins 5 and 6. On closure of the V.F.C., output relay contacts changeover. On opening of the V.F.C. set delay period commences on expiration of which output relay reset. Re-closure of the V.F.C. once timing has commenced resets timing, which re-commences when the V.F.C. is re-opened. If the supply is removed during any part of the sequence the timer will reset.

Function

Display

Delay off (with supply connected)
When the supply is connected and the Volt Free Contact (V.F.C.) is closed across A1 and B1 the output relay will energise> When the V.F.C. is opened the set time period will begin, at the end of the time period the relay will de-energise. Note closing the V.F.C. will reset the timer and the set time period will begin.

Interval
When the supply is connected and terminals A1 and B1 are linked the output relay will energise for the set time period (i.e. supply initiated interval) OR. Connect the supply and by closing a Volt Free Contact (V.F.C.) across A1 and B1 the output relay will energise for the set time period. Note reclosing the V.F.C. while the relay is energised will reset the time period.

On connection of the supply the starter will energise for set ON time, then reset for set OFF time. This sequence will repeat for the preset number of attempts or until the supply is removed. If after the preset number of attempts the engine fails to start a second relay is energised and can be used to set off an alarm. Both ON and OFF times are independently variable.

When the supply is connected the set OFF delay period commences. At the end of this period the output relay is energised for the set ON time. On completion of this period the delay is released and held in this state. To restart the timing sequence the supply must be removed and re-applied. Both ON and OFF times are independently variable.

Function

Display

When the supply is connected, output relay contacts changeover and set ON time commences at the expiration of which output relay is released for duration of OFF time. Relay is then energised and this cycle is repeated as long as supply is connected.

When the supply is connected, set OFF time commences, at the expiration of which output relay contacts changeover for duration of ON time. Relay is released and OFF time recommences, this cycle is repeated as long as supply is connected.